Department of Applied Chemistry , Kyungpook National University , 80 Daehakro , Bukgu, Daegu 41566 , Republic of Korea.
Department of Environmental Engineering , Kyungpook National University , 80 Daehakro , Bukgu, Daegu 41566 , Republic of Korea.
J Org Chem. 2018 Apr 6;83(7):4140-4146. doi: 10.1021/acs.joc.8b00048. Epub 2018 Mar 26.
Aryl 2-bromobenzoates and aryl 2-bromocyclohex-1-enecarboxylates are cyclized by microwave irradiation in dimethylformamide in the presence of KCO to give the corresponding 6 H-benzo[ c]chromen-6-ones and their 7,8,9,10-tetrahydro analogues, respectively, in 50-72% yields. Aryl 3-bromoacrylates are also converted into 2 H-chromen-2-ones under the employed conditions.
芳基 2-溴苯甲酸盐和芳基 2-溴环己-1-烯羧酸酯在二甲基甲酰胺中在 KCO 的存在下通过微波辐射环化,分别得到相应的 6H-苯并[c]色烯-6-酮及其 7,8,9,10-四氢类似物,产率为 50-72%。在采用的条件下,芳基 3-溴丙烯酰胺也转化为 2H-色烯-2-酮。